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route.h
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1999-05-11
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/********************************************************copyrite.xmc***/
/* */
/* Licensed Materials - Property of IBM */
/* */
/* This module is "Restricted Materials of IBM": */
/* Program Number: 5798RXW */
/* Program Name: IBM TCP/IP Version 1.2 for OS/2 */
/* (C) Copyright IBM Corporation. 1990, 1991. */
/* */
/* See IBM Copyright Instructions. */
/* */
/********************************************************copyrite.xmc***/
#ifndef __ROUTE_32H
#define __ROUTE_32H
/*
* Copyright (c) 1980, 1986 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and that due credit is given
* to the University of California at Berkeley. The name of the University
* may not be used to endorse or promote products derived from this
* software without specific prior written permission. This software
* is provided ``as is'' without express or implied warranty.
*
* @(#)route.h 7.3 (Berkeley) 12/30/87
*/
/*
* Kernel resident routing tables.
*
* The routing tables are initialized when interface addresses
* are set by making entries for all directly connected interfaces.
*/
/*
* We distinguish between routes to hosts and routes to networks,
* preferring the former if available. For each route we infer
* the interface to use from the gateway address supplied when
* the route was entered. Routes that forward packets through
* gateways are marked so that the output routines know to address the
* gateway rather than the ultimate destination.
*/
#ifndef __IF_32H
#include <net/if.h>
#endif
struct rtentry {
u_long rt_hash; /* to speed lookups */
struct sockaddr rt_dst; /* key */
struct sockaddr rt_gateway; /* value */
short rt_flags; /* up/down?, host/net */
short rt_refcnt; /* # held references */
u_long rt_use; /* raw # packets forwarded */
struct ifnet *rt_ifp; /* the answer: interface to use */
long metric1; /* routing metrics for SNMP and Co */
long metric2;
long metric3;
long metric4;
};
/*
* A route consists of a destination address and a reference
* to a routing entry. These are often held by protocols
* in their control blocks, e.g. inpcb.
*/
struct route {
struct rtentry *ro_rt;
struct sockaddr ro_dst;
};
#define RTF_UP 0x1 /* route usable */
#define RTF_GATEWAY 0x2 /* destination is a gateway */
#define RTF_HOST 0x4 /* host entry (net otherwise) */
#define RTF_REJECT 0x8 /* host or net unreachable */
#define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */
#define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */
#define RTF_DONE 0x40 /* message confirmed */
#define RTF_MASK 0x80 /* subnet mask present */
#define RTF_CLONING 0x100 /* generate new routes on use */
#define RTF_XRESOLVE 0x200 /* external daemon resolves name */
#define RTF_LLINFO 0x400 /* generated by ARP or ESIS */
#define RTF_STATIC 0x800 /* manually added */
#define RTF_BLACKHOLE 0x1000 /* just discard pkts(during updates) */
#define RTF_PROTO2 0x4000 /* protocol specific routing flag */
#define RTF_PROTO1 0x8000 /* protocol specific routing flag */
/*
* Routing statistics.
*/
struct rtstat {
short rts_badredirect; /* bogus redirect calls */
short rts_dynamic; /* routes created by redirects */
short rts_newgateway; /* routes modified by redirects */
short rts_unreach; /* lookups which failed */
short rts_wildcard; /* lookups satisfied by a wildcard */
};
#define RTENTRY_COUNT 512
#pragma pack(1)
struct rtentries {
short hostcount;
short netcount;
struct rtentry rttable[RTENTRY_COUNT];
};
#pragma pack()
#endif /* __ROUTE_32H */